Rotary motor.



W. S. ELLITT. ROTARY MOTOR. uruouxon FILED nu z2, 190s.

L 0, T o M m T 0 un AI'PLIOATION FILED KAY 22, 1908.

ZEET 2.

' Patented Oct. 26, 1909.

' Various tools, and which is particularly *use-V To all whom 'it mayconcern:

UNITED sTArns PATENT clarion.

WILLIAM S. ELLIOTT, OF PITTSBRG, PENNSYLVANIA.

ROTARY MOTOR.

Be it known that I, ILLIAM S. ELLIOTT, of Pittsburg, Allegheny county,Pennsylvania, have invented a new and useful lmprovement in RotaryMotors, of which the following is a full, clear, and exact description,reference being had to the accompanying drawings, forming part of thisspeeltivQation, in which- Figure 1 is a longitudinal section of one formof motor embodying my invent-ion; F ig. f2 is a cross-section on theline H-*H of F ig. `1; F ig. 3 is a longitudinal section of the rearbearing showing a. slightly modified construction; Fig. 4 is an end viewof Fig. 3; F igs. 5 and 6 are respectivelyside and end Views of theprotecting device for the turbine vanes; Fig. 7 is a longitudinalsection showing a modi-fied construction; and Fig. 8 is an'end view ofFig. 7.

yMy-invention has relation to the class of rotary motors, and moreparticularly to turbine motors of this class which are adapted to beoperated by hydraulic power.

One object of my invention is to provide a motor of simple, compact andellicient constructionwhich can be used for. operating ful for theoperation of boiler-tube cleaners of that type in which the motor iscarried through the tube to be cleaned with the cleaning tool. Y

A further object is to provide a motor of this kind so constructed thatone or both of the supports for the motor shaft bearings can be readilyremoved from the shell or casing of the motor for replacement or repairsWithout the use of threaded connections of a character likely to becomeloose in operation.

A further object is to provide means oi novel, simple and ellicicntcharacter for protecting the vanes of the turbine wheel of the motorfrom wearing Contact with the casing or shell and which can be readily.removed and replaced when worn.

The precise nature of my invention will be best understood by referenceto the aecompanying drawings, which will now be described, it being.premised, however, that various changes and modifications may be made inthe details of construction and arrangement by those skilled in the artwithout departing from the spirit and' scope of my invention -as definedin Athe appendedl claims.

Referring first t0 the form of ymotor which Specification of LettersPatent.

Application filed May 22, 1908. Serial N o. 434,220. I

is shown in Figs. l to G, inclusive, the numeral 2 designates the casingor shell ot the motor, which, when the motor 1s designed for operatingboiler tube cleaners is of af cylindrical form, although for otherpurposes it may be of any desired exterior form.

The casing is shown as provided at its front end portion with anintegral spider 3,

which carries a central support 4 for a re' movable bushing` 4"L whichforms the Ifront bearing for the shaft 6v of the turbine wheel 7. Thisbushing is preferably provided with a flange or shoulder S at its innerend which vseats against the liange 9 at the inner end of the ring 4.

The bearing for the rear end of the shaft 6 is formed by a bushing l0,which is removably seated within a detachable rear heador bearingsupport member ll, which lits within the open rear end of the casing orshell 2, and is removably secured therein, preferably by. means of thescrew-bolts 12. `rThe seats for these screw-bolts are formed partly inthe head or member ll and partly in the shell or casing 2, so that thecenter line'of the screw-bolts will be in the line where the outersurface of the member ll fits the'inner surface oi the casing or shell2. The shaft 6 turns in the bushings 4 and 10, its rear thrust beingtaken by a plug or abutment 10a, against which its rear end bears, andwhich is seated at the rear end of the bushing l0.

The member ll is formed with a rearward hollow boss or extension 13,formed with au interior thread to receive the threaded shank 14 of asupply pipe or hose. The head or member ll is of spider construction, asshown in Fig. 4, the space between the armsl of the spider forming anadmission chamber 1G for the operating fluid. 'lhis chamber has anannularly extending portion 17 which communicates with the turbine wheel7 by means of a series of obliquely directed ports 18 formed in thenozzle plate lt), which constitutes the inner end portion oi" the member11. In the construction shown in Fig. l, this nozzle plate 19 is anintegral part of the head. In the construction shown in l `igs; 3 and 4,however, it is formed as a separate circular plate, which is screwedonto the threaded central hub or boss 20 of the meinber 11.

For the purpose of preventing the outer edge of the turbine wheel fromrubbing: against the interiorof the shell or casing,

Patented Uct. 26, 1909.

' with the wheel.

and thereby wearing away the outer edge of the wheel and the edges ofthe vanes, l provide the device which is shown in detail in Figs. 5 and6. This device consists of a cylindrical cap member 2l, having a iaiigeportion 22, which is made to tit snugly around the periphery of thewheel 7. rlhe front end of the cap covers the ends of the vanes of thewheel, and is provided willi the vanes 23, which are at an angletocorrespond with the angle of discharge from the vanes of the wheel, sothat the water after leaving the vanes of the wheel passes along thevanes 23 until it is clear of the wheel. This cap member is'shown asbeing held in place by screwing the shaft (3 into the wheel 7, the shafthaving a shoulder 6, against which is seated a washer 23 which jainbsthe member 2l up against the front face of the wheel so that said memberwill revolve The member 2l forms a very simple and effective means forpreventing the wear of the outer edge of the wheel,

" since its outer surface wears against the shell and thereby protectsthe edges of the wiev vanes, and thus greatly prolongs the life of thewheel. The member 2l is inexpensive in construction, and when the iange22becomes worn away, the member can be readily replaced and thus restorethe' el'liciency of the wheel. The flange 22 may, of course, beconstructed in various ways and supported from the hub portion of themember.

The casing or shell has the interior space 24 for the discharged water,which escapes at the front end of the shell or case, which is openexcept for the spider arms which support the front beai'iiig as abovedescribed.

25 designates a lubricant passage having branches leading to the frontbearing, and normally closed by a spring-pressed ball or valve 26. 27 isa lubricant passage for intioducing a lubricant to the rear shaftbearing.

In the modification shown in Fig. 7, the supporti for the bushing 22),which forms Athe rear bearing, is made integral with the casing orshell, in the saine manner as the front bearing in the form shown inFig. l; while the support 30 which carries/the bushing Sil which formsthe front bearing for the shaft is made removable and is secured withinthe open end of thecasing or shell lijtlie screw-bolts 32, which aresimilar to the bolts l2 of the construction first deseribedl lt will beobvious that if desired, bolli the front and i'ear bearing supports maybe made del aehable, the rear ysupport being arranged as shown in Fig.l. in such 'a ease, and the lli'oul support being (,'onsli-ueled a-iidarranged as shown in ["ig. 7.

By making at least one of the bearing suprpoi'ts removable'. it will beseen that full access may be had to all the bearing parts for thepurpose of renewals or repairs. .ln

the form shown in Fig. l, the shaft and wheel must of course be insertedfrom the rea-r end ofthe cylinder before4 the rear ineinbeior head 21 issecured in place, while inthe form shown in Fig. 7 the shaft and wheelwill dbe inserted from the front end of the casing.

The construction shown in Figs. 7 and 8 'forms the subject matter of adivisional apine May G, 1909, Serial.

plication filed by No. 494,417.

-\Vliiit I claim is zl. In a rotary motor of the turbine type, a casingor shell, shaft bearings carried by the casingr or shell, a shaftsupported in thesaid'bearings, a turbine wheel removably secured to theshaft between the bearings, and a cap membei seated against the frontside of the wheel between the wheel and the front bearing, said memberbeing'arranged to rotate with the wheel, and having a ange surroundingthe periphery of the Wheel, the front wall of said member having 'vaneswhich form a continuation of the vanes of the wheel; substantially asdescribed.

2. In a rotary motor of the turbine ty e, a casing or shell, shaftbearings carried Iby the casing or shell, a shaft supported in the saidbearings, a turbine wheel removably secured to the shaft between thebearings, and a cap member seated against the front side of the wheelbetween the wheel and the front bearing, said member ybeing arranged torotate with the wheel, and having a flange surrounding the periphery ofthe wheel, the'front wall of said member having vanes which form acontinuation of theA vanesof the wheel, together with a washerinterposed between the front bearing and the said cap member and holdingthe same to the wheel; substantially as described.

In a rotary motor of the turbine t e, a easing or shell, shaft bearingscarriedT y the casing or shell, a shaft supported in the said bearings,aturbine wheel removably secured to the shaft betweenthe bearings, and acap member seated against the front sdeofthe wheel between the wheel andthe front bearing, said member being arranged to rotate'with the wheel,and having a flange surrounding the periphery of the wheel, the frontwall of said member having vanes which form a continuation ofk the vanesof consisting of a member arranged to rotate t with the wheel and havinga flange sur rounding the periphery of the wheel and having its forwardwall provided with vanes which forni a continuation of the vanes of thewheel;.substantially as described.

5. In a rotary motor of the turbine type,

the combination with a casing or shell, shaft bearings carried by thecasing or shellza shaft supported in said bearings, a. turblne 5 Wheelsecured on said shaft, and a cap mem-v ber seated a ainst the front sideof the-Wheel to rotate therewith and having vanes which register withthe vanos of the wheel, 'and also a ange portion which fits around thev10 periphery of the wheel; substantially as described. 6. In 'a rotarymotor of vthe* turbine type,

a protecting device for' the turbine Wheei,

'my hand..

lconsisting of a member arranged to rotate with the Wheel and having aflange surroundingtthe periphery)T of the wheel and having its forwardWalll provided with vanes, which are hclined in the same direction asthe discharge of the vanes of th wheel; substantially as described. 1

In testimony whereof, I have hereunto set WILLIAM S. ELLIOTT. Witnesses:

GEO. H. PAPMELEE.

H. M. CORWIN.

